Polylactic acid carrier color master batch and preparation method thereof

A technology of polylactic acid and color masterbatch, which is applied in the direction of adding pigments in single-component polyester rayon filament and spinning solution, can solve the problems of large amount of addition and the influence of mechanical properties of finished fibers, so as to achieve no three-waste pollution. , the processing technology is easy to control, the effect of low filter value

Active Publication Date: 2021-10-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the color masterbatches prepared in these two invention patents can be applied to the production of polylactic acid colored yarn, the dispersant is a mixture of polyethylene wax and nano-calcium carbonate, and the addition amount is relatively large, which will affect the finished fiber. have a certain influence on the mechanical properties of

Method used

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  • Polylactic acid carrier color master batch and preparation method thereof
  • Polylactic acid carrier color master batch and preparation method thereof
  • Polylactic acid carrier color master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Polylactic acid carrier masterbatch, components:

[0026]

[0027]

[0028] Preparation method: first put the polylactic acid slices into the grinding disc mill for grinding, and the powder is sent to the vibrating screen by the discharge fan, and the polylactic acid powder with a particle size greater than 60 meshes is sieved, and then the polylactic acid powder, pigment and dispersant (a mixture of polyethylene wax and nano-polystyrene microspheres) were added to the high-speed mixer according to the above ratio and stirred for a certain period of time (preferably 2min) to make the materials evenly mixed, and the mixture was quantitatively fed into the twin-screw by weight loss. Extruder, the material is melted, sheared and mixed, devolatilized, re-sheared, etc., and extruded through the die head of the extruder. The extrusion temperature is preferably 225°C. After drying, enter the granulator to cut into particles of the required size, and finally sieve in the ...

Embodiment 2

[0030] Polylactic acid carrier masterbatch, components:

[0031]

[0032] The preparation process is the same as in Example 1, but the extrusion temperature of the extruder is preferably 220°C. The pressure filtration performance and viscosity drop test of the finished color masterbatch showed that the pressure filtration value was 0.029MPa / g, and the viscosity dropped to 0.216dl / g, which met the long-term stable operation requirements of the polylactic acid colored yarn spinning process.

Embodiment 3

[0034] Polylactic acid carrier masterbatch, components:

[0035]

[0036] The preparation process is the same as in Example 1, but the extrusion temperature of the extruder is preferably 212°C. The pressure filtration performance and viscosity drop test of the finished color masterbatch showed that the pressure filtration value was 0.056MPa / g, and the viscosity dropped to 0.342dl / g, which met the long-term stable operation requirements of the polylactic acid colored yarn spinning process.

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Abstract

The invention provides a polylactic acid carrier color master batch and a preparation method thereof. The polylactic acid carrier color master batch is formed by twin-screw extrusion. The addition amount of a pigment is 10-40%. A dispersing agent is a mixture of polyethylene wax and nano polystyrene microspheres, and the addition amount of the dispersing agent is 0.6-3.7% (wherein the content of the polyethylene wax is 50-70%, and the content of the nano polystyrene microspheres is 50-30%). Under the addition amount, the filter pressing value of the color master batch is relatively low and is lower than 0.08 MPa / g. According to the method, an excellent effect can be achieved with a small adding amount of the dispersing agent, and the long-period stable operation requirement of the polylactic acid color yarn spinning process can be met.

Description

technical field [0001] The invention belongs to the technical field of masterbatch preparation, and in particular relates to a polylactic acid carrier color masterbatch and a preparation method thereof. Background technique [0002] In the production of masterbatches, the role of dispersants is very important. After adding pigments to polymers, the processing fluidity of the melt will be reduced to varying degrees. On the one hand, dispersants can reduce the entanglement of polymer molecular chains. Function, give materials high fluidity, improve processing performance, on the other hand, it can wet pigment particles, improve the interface state between pigment and polymer, and promote the dispersion of pigment. When preparing masterbatches, it is necessary to select the appropriate type of dispersant, and the amount added should be controlled within an appropriate range. If the amount added is too small, the pressure filtration value of the masterbatch will increase signifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L23/06C08L25/06C08K5/23C08J3/22D01F1/04D01F6/92
CPCC08J3/226D01F1/04D01F6/92C08J2467/04C08J2423/06C08J2425/06C08K5/23
Inventor 潘晓娣严岩胡兆麟钱明球李世君贾君君
Owner CHINA PETROLEUM & CHEM CORP
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